Fluid-pump.



G. W. KELLOGG.

FLUID PUMP APPLICATION FILED SHE-21,1914.

338K533. Patented June 20,1916.

G. W. KELLOGG.

FLUID PUMP. 'APPLIQATIOH FILED SEPT. 21. 19M.

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nun anus nnm GEORGE W. KELLOGG, OF It/DCHE$TEB, NEW YORK, ASSIGNUIR TKELLOGG MANUFAC- DURING COMPAN Y, 0F ROGHESTEfi, NEW YORK, A CORPORATIONOF Nail-W YORK.

FLUID-PUMI.

Application filed September 21, 1914. Serial No. 862,843.

it all whom it may concern Be it known that I, GEORGE W. Krmoso, ofRochester, in the county of Monroe and State of New York, have inventedcertain new and useful Improvements in Fluid- Pumps; and I do herebydeclare the follow.-

ingto be a full, clear, and exact description of the same, referencebeing had to the accompanying drawings, forming a part of thisspecification, and to the reference-numerals marked thereon. V

The present invention relates to fluid pumps, withmore particularreference to the typeof pump that is employed forebtaining air and otherlight fluids under. pressure, and it has for its obj act to provideanovel construction and arrangement of the several parts, affording amachine that is characterized by great compactness and lightness ofWeight, While at the same time resulting in extreme efliciency inoperation.

A further object of the invention consists in so combining the severalparts as to afford a balanced structure operating undera minimum amountof friction, and which can be successfully applied to small units.

Still another purpose of the invention is found in the provision oflubricating means that prevents the admission of any lubricant into thepressure chamber or into the iiuid passing through the pump.

.Another object that the invention contemplates'is the provision ofnovel features affecting the connection between the drive shaft and thepiston, whereby greater capacity and strength is obtained.

To these and other ends the invention consists in certain improvementsand combinations of parts, all as will be hereinafter more fullydescribed, the novel features be ing pointed out in the claims at theend of the specification.

In the drawings: Figure 1-is a side elevation of a pump constructed inaccordance with the invention. Fig. 2 is a longitudinal verticalsectional view. Fig. 8 is a transverse vertical sectional view on theline 3*.3 of Fig. 2, and Fig. is a horizontal sectional view on the line44.- of

hi 2. imilar reference numerals throughout the several views indicatethe same parts.

The invention is susceptible of many different applications, andhas beendesigned primarily for the purpose of providing a Specification ofLetters Patent.

Patented June 20, 1916.

Q 1 m1 nth small, light, compact p ssessmg a high degree of efficiency,such as-is employed as an adjunct to automobile construction, to

afford a means for carrying a supply of air ranged in spaced relation toeach other, and "constitute a part of the connecting means between thedrive shaft and the piston which is to be hereinafter described.

Detachably arranged on the base A is a cylinder D, that is comparativelyshort in order to reduce the Weight and size of the machine as much aspossible, and the cylinder may be secured on the base in any desirablemanner as by means of screws D Which engage alined openings in thecylinder and base. The ,cylinder is provided with intake and outletvalvesDi nd D controlling the passages leading to antfrom the cylinderand these'are of the usual construction such as employed in this type ofmachinery.

Arranged for reciprocatory movement within the cylinder D is a piston Ethat is comparatively short and wide correspending to the proportion ofthe cylinder so that while only a short stroke is imparted to thepiston, the reduction is more than oil'set by the increasedcrosssectional area of the piston and cylinder. The piston E' isprovided with flexible packing rings E seated in'grooves E and carries adownwardly pro3ect1ng extension E which is connected by a wrist pin Ewith the eccentric straps E surrounding the aforesaid so centrics C. Itwill be noted that the connecting devices between thepiston and driveshaft are disposed in spaced relation to each otheron opposite sides ofthe axial line of of the latter an increasing the power of the machinewhile at the same time afi'ording an arrangement that permits ofsuccessfully guiding the movement of the piston and retaining it at alltimes in proper rclation at right angles to the axis of the cylindcr. Tothis end I form on the extension E, at the lower part thereof, a yokeporthe piston thereby balancing the movement l sorbent ring F 7.

tion-E which straddles the drive shaft B, the arms of the yoke portionbeing such a distanceapart as to closely engagethe drive shaft duringthe travel of the piston.

formed integral with the base and operatingto cause the lubricating oilto be prO ected.

toward the center of the under surface of the piston rather than towardthe wall of the cylinder as would be the case if the baffle were notprovided. Arranged on the upper side of the baflle F is an annular ringF. of suitable absorbent material, preferably absorbent wool whichcatches the lubricant as it is thrown downwardly from the piston andholds it, up to the point of full saturation, the surplus lubricantdropping back into the oil chamber in the base. This action isfacilitated by providing the piston on its under surface with deflectingmeans, which in the present instance consists of recessed portions Fterminating at a distance from the edge of the piston, afiording curvedshoulders F These deflect the oil downwardly before it reaches theedgeof the piston, causing it to fall initially onto the ab- When thepistontravels downwardly it contacts with the ring F 'thus slightlylubricating the outer portion of the lower face of the piston and supplying the requisite amountof lubrication to the inner wall of the cylinderas the piston travels upwardly. This prevents an excess of oil fromcoming into engagement with the walls of the cylinder, so that none ofthe lubricant will be carried past the piston and injected into thefluid undergoing compression. 'The oil chamber is filled through an Iopening controlled by a plug F and F designates an air opening for thebase, covered by the screen F The invention affords an extremely simplearrangement that can'be manufactured at low cost, and presents greatadvantages in efliciency of operation. The structure is compact and canbe readily handled, requiring little space and adding but a small -.Iclaim as my invention:

4 1. In a pump, the combination with a base having an oilchamber locatedtherein, of a cylinder arranged on the base, a" piston" reciprocatingwithin the cylinder, a bafile lol his serves to hold the piston inproper al1neon the lower face of the piston." weight to the machinetowhich it is applied.

of a.cylinder detachably arranged above the base, a piston reciprocatingwithin the cylinder, a baffle located at the bottom of the cylinder, anabsorbent member disposed above the battle in juxtaposition thereto, anddeflecting means on the lower face of the piston.'

3. In a-tire pump, a crank case having an opening in its circumferentialwall and an inwardly projecting flange defining said opening andconstituting a bafiie ring and cylinder seat, a cylinder mountedthereon, a piston movable in said cylinder, and an annular lubricatingpad supported. upon said flange adapted to be engaged by the piston uponthe suction stroke of the latter,

-the pad being exposed to the opening,

cant by the splash from the crank case.

4:. In a tire pump of the character described, a crank case, a cylindermounted thereon, a piston operating in the cylinder, a shaft passingthrough the crank case, means operatively connecting the shaft to thepiston to reciprocate the latter, a bafie flange formed at the junctionof the crank case and the cylinder, a lubricating pad supported upon theflange and adapted to be compressed by the piston upon its suctionstroke, and means whereby lubricant may be disposed in the lower portionof the crank case, there being an open space between the crank case andthe adjoining portion of the cylinder and the pad being exposed to suchspace, asand for the purpose set forth.-

5. In a pump, a crank case, a cylinder detachably mounted upon the crankcase, a shaft passing through the crank case, a piston having adepending member longi tudinall'y slotted to embrace the shaft, the slotopening at the lower end of the member, whereby said depending membermay be dropped into position over the shaft when the cylinder isremoved, and an actuating member mounted on the shaft and disposed attheside of said member and'operatively connected with the piston.

6. In a pump, the combination with a base having an oil chamber locatedtherein, of a cylinder arranged above the base, a piston reciprocatingwithin the cylinder, a bafile located at the bottom of the cylinder, anab sorbent member disposed above the battle in juxtaposition thereto,and deflecting means guiding member. provided with an open ended slotfor removably engaging said shaft and an actuating member mounted onlift memsl g the shaft and pivotelly cemented with the piston, theguiding member being located piston. between said eccentrics and havingan open 1 8. In a pump, the combination with :1, cylended slot remevablyengaging the drive inder and a'eclprocating piston, of s,\drive .shaft.

5 shaft, a, pair of eccentrics mounted. on the GEORGE W. KELLOGG driveshaft in spaced relation to each other Witnesses:

and pivotally connected with said piston, H.E. STONEBRAKER,

and a guidmg member carried by said RUSSELL B. GRIFFITH-

